Feature: *Application: It is used for mounting on a hexagonal tool in the installation of a pneumatic screwdriver, electric screwdriver, pneumatic drill, electric drill pistol drill, manual screwdriver,. *Can convert the hexagonal shape into a square head size, thus Can be used for the installation of the sleeve, which is a good accessory for conversion. *Sockets can be securely held with the spring loaded ball bearing on head. *The 1/4" hex shank fits all quick change chucks as well as standard drill chucks. Specifications: Product Name: Socket Adapter Material: Chrome Vanadium Steel Color: Black (As pictures show) Shank: 1/4 inch (6.35mm Hex) Head: 1/4Inch (Square) Length: (Approx.) 65mm Suitable for: hexagonal tool in the installation of a pneumatic screwdriver, electric screwdriver, pneumatic drill, electric drill pistol drill Quantity: 5pcs Package Included: 5 × Socket Adapter Note: 1.Transition: 1cm=10mm=0.39inch. 2. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 3. Please allow slight manual measurement deviation for the data.single head, double head. 5× Socket Adapter for Driver Hex Shank to Square Socket Extension 1/4Inch Packing List:5*Extension rod For the quality problems or defects of the product itself, we will provide unconditional return or repair service